User's Manual Part 2

Appendix F
Hub Site Synchronization
F.1 Introduction
HSS is an ordering option, WinLink 1000 ODU units are supplied with
special hardware for the collocation of several units, using a method
called Hub Site Synchronization (HSS). HSS uses an external cable
connected to all collocated WinLink 1000 radios. This cable carries
pulses sent to each radio, which synchronize their transmission with
each other.
This pulse synchronization ensures that the transmission of packets
occurs at the same time for all collocated units. This synchronized
transmission also results in all of the hub units receiving data at the
same time, eliminating the possibility of interference that could result
if some units transmit while other units at the same location receive.
HSS supports installation of up to eight collocated units.
Figure F-1 shows interference caused by non-synchronized collocated
units.
WinLink 1000 Introduction F-1